mash: Migrate ShowSetTimeDialog from SystemTrayDelegate to mojo

chrome/browser/ui/ash/system_tray_client.cc

Index: chrome/browser/ui/ash/system_tray_client.cc
diff --git a/chrome/browser/ui/ash/system_tray_client.cc b/chrome/browser/ui/ash/system_tray_client.cc
index 2025fee2d73637310eee322c3551056f9cba175e..faeb167a26f555a7acf6d673799498e5c6a78b1a 100644
--- a/chrome/browser/ui/ash/system_tray_client.cc
+++ b/chrome/browser/ui/ash/system_tray_client.cc
@@ -16,6 +16,7 @@
 #include "chrome/browser/chromeos/accessibility/accessibility_util.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/options/network_config_view.h"
+#include "chrome/browser/chromeos/set_time_dialog.h"
 #include "chrome/browser/chromeos/system/system_clock.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/ash_util.h"
@@ -143,6 +144,10 @@ void SystemTrayClient::ShowDateSettings() {
                                         sub_page);
 }
 
+void SystemTrayClient::ShowSetTimeDialog() {
+  chromeos::SetTimeDialog::ShowDialogInContainer(GetDialogParentContainerId());
+}
+
 void SystemTrayClient::ShowDisplaySettings() {
   content::RecordAction(base::UserMetricsAction("ShowDisplayOptions"));
   ShowSettingsSubPageForActiveUser(kDisplaySettingsSubPageName);